Home
Class 7
CHEMISTRY
When a candle burns, both physical and c...

When a candle burns, both physical and chemical changes take place. Identify these changes. Give another example of a familiar process in which both the chemical and physical changes take place.

Promotional Banner

Topper's Solved these Questions

  • FIBRE TO FABRIC

    PSEB|Exercise Exercise|7 Videos

  • Water: A precious Resource

    PSEB|Exercise Exercise|14 Videos

Similar Questions

Explore conceptually related problems

Define physical change and chemical change.

Give one example where both chemical and physical changes occur together?

When candle burns which change tkes place ?

Is photosynthesis is a chemical change or a physical change?

PSEB-PHYSICAL AND CHEMICAL CHANGES-Exercise
  1. Classify the changes involved in the following processes as physical o...

    Text Solution

    |

  2. State whether the following statements are true and false. In case a s...

    Text Solution

    |

  3. State whether the following statements are true and false. In case a s...

    Text Solution

    |

  4. State whether the following statements are true and false. In case a s...

    Text Solution

    |

  5. State whether the following statements are true and false. In case a s...

    Text Solution

    |

  6. State whether the following statements are true and false. In case a s...

    Text Solution

    |

  7. Fill in the blanks in the following statements:- When carbon dioxide i...

    Text Solution

    |

  8. Fill in the blanks in the following statements:- The chemical name of ...

    Text Solution

    |

  9. Fill in the blanks in the following statements:- Two methods by which ...

    Text Solution

    |

  10. Fill in the blanks in the following statements:- Changes in which only...

    Text Solution

    |

  11. Fill in the blanks in the following statements:- Changes in which new ...

    Text Solution

    |

  12. When baking soda is mixed with lemon juice, bubbles are formed with ...

    Text Solution

    |

  13. When a candle burns, both physical and chemical changes take place. Id...

    Text Solution

    |

  14. How would you show that setting of curd is a chemical change?

    Text Solution

    |

  15. Explain why burning of wood and cutting it into small pieces are consi...

    Text Solution

    |

  16. Describe how crystals of copper sulphate are prepared.

    Text Solution

    |

  17. Explain how painting of an iron gate prevents it from rusting.

    Text Solution

    |

  18. Explain why rusting of iron objects is faster in coastal areas than in...

    Text Solution

    |

  19. The gas we use in the kitchen is called liquified petroleum gas (LPG)....

    Text Solution

    |

  20. Anaerobic bacteria digest animal waste and produce biogas (Change-A). ...

    Text Solution

    |